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        <a href="digichef-module.html">Package&nbsp;digichef</a> ::
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        Module&nbsp;managers
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<h1 class="epydoc">Source Code for <a href="digichef.recommender.managers-module.html">Module digichef.recommender.managers</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno">  1</tt>  <tt class="py-line"><tt class="py-comment">#recommender managers</tt> </tt>
<a name="L2"></a><tt class="py-lineno">  2</tt>  <tt class="py-line"> </tt>
<a name="L3"></a><tt class="py-lineno">  3</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">django</tt><tt class="py-op">.</tt><tt class="py-name">db</tt> <tt class="py-keyword">import</tt> <tt id="link-0" class="py-name" targets="Module digichef.core.models=digichef.core.models-module.html,Module digichef.profiles.models=digichef.profiles.models-module.html,Module digichef.recipes.models=digichef.recipes.models-module.html,Module digichef.recommender.models=digichef.recommender.models-module.html,Module digichef.registration.models=digichef.registration.models-module.html,Module digichef.tagging.models=digichef.tagging.models-module.html,Module digichef.tagging.tests.models=digichef.tagging.tests.models-module.html,Module digichef.util.models=digichef.util.models-module.html,Module digichef.voting.models=digichef.voting.models-module.html,Module digichef.voting.tests.models=digichef.voting.tests.models-module.html"><a title="digichef.core.models
digichef.profiles.models
digichef.recipes.models
digichef.recommender.models
digichef.registration.models
digichef.tagging.models
digichef.tagging.tests.models
digichef.util.models
digichef.voting.models
digichef.voting.tests.models" class="py-name" href="#" onclick="return doclink('link-0', 'models', 'link-0');">models</a></tt> </tt>
<a name="L4"></a><tt class="py-lineno">  4</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">django</tt><tt class="py-op">.</tt><tt class="py-name">contrib</tt><tt class="py-op">.</tt><tt class="py-name">contenttypes</tt><tt class="py-op">.</tt><tt id="link-1" class="py-name"><a title="digichef.core.models
digichef.profiles.models
digichef.recipes.models
digichef.recommender.models
digichef.registration.models
digichef.tagging.models
digichef.tagging.tests.models
digichef.util.models
digichef.voting.models
digichef.voting.tests.models" class="py-name" href="#" onclick="return doclink('link-1', 'models', 'link-0');">models</a></tt> <tt class="py-keyword">import</tt> <tt class="py-name">ContentType</tt> </tt>
<a name="L5"></a><tt class="py-lineno">  5</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">django</tt><tt class="py-op">.</tt><tt class="py-name">contrib</tt><tt class="py-op">.</tt><tt class="py-name">auth</tt><tt class="py-op">.</tt><tt id="link-2" class="py-name"><a title="digichef.core.models
digichef.profiles.models
digichef.recipes.models
digichef.recommender.models
digichef.registration.models
digichef.tagging.models
digichef.tagging.tests.models
digichef.util.models
digichef.voting.models
digichef.voting.tests.models" class="py-name" href="#" onclick="return doclink('link-2', 'models', 'link-0');">models</a></tt> <tt class="py-keyword">import</tt> <tt class="py-name">User</tt> </tt>
<a name="L6"></a><tt class="py-lineno">  6</tt>  <tt class="py-line"> </tt>
<a name="L7"></a><tt class="py-lineno">  7</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt id="link-3" class="py-name" targets="Module digichef.profiles.utils=digichef.profiles.utils-module.html,Module digichef.recommender.utils=digichef.recommender.utils-module.html,Module digichef.tagging.utils=digichef.tagging.utils-module.html"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-3', 'utils', 'link-3');">utils</a></tt> </tt>
<a name="L8"></a><tt class="py-lineno">  8</tt>  <tt class="py-line"> </tt>
<a name="L9"></a><tt class="py-lineno">  9</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-4" class="py-name" targets="Package digichef.voting=digichef.voting-module.html"><a title="digichef.voting" class="py-name" href="#" onclick="return doclink('link-4', 'voting', 'link-4');">voting</a></tt><tt class="py-op">.</tt><tt id="link-5" class="py-name"><a title="digichef.core.models
digichef.profiles.models
digichef.recipes.models
digichef.recommender.models
digichef.registration.models
digichef.tagging.models
digichef.tagging.tests.models
digichef.util.models
digichef.voting.models
digichef.voting.tests.models" class="py-name" href="#" onclick="return doclink('link-5', 'models', 'link-0');">models</a></tt> <tt class="py-keyword">import</tt> <tt id="link-6" class="py-name" targets="Class digichef.voting.models.Vote=digichef.voting.models.Vote-class.html"><a title="digichef.voting.models.Vote" class="py-name" href="#" onclick="return doclink('link-6', 'Vote', 'link-6');">Vote</a></tt> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-7" class="py-name" targets="Package digichef.tagging=digichef.tagging-module.html"><a title="digichef.tagging" class="py-name" href="#" onclick="return doclink('link-7', 'tagging', 'link-7');">tagging</a></tt><tt class="py-op">.</tt><tt id="link-8" class="py-name"><a title="digichef.core.models
digichef.profiles.models
digichef.recipes.models
digichef.recommender.models
digichef.registration.models
digichef.tagging.models
digichef.tagging.tests.models
digichef.util.models
digichef.voting.models
digichef.voting.tests.models" class="py-name" href="#" onclick="return doclink('link-8', 'models', 'link-0');">models</a></tt> <tt class="py-keyword">import</tt> <tt id="link-9" class="py-name" targets="Class digichef.tagging.models.Tag=digichef.tagging.models.Tag-class.html"><a title="digichef.tagging.models.Tag" class="py-name" href="#" onclick="return doclink('link-9', 'Tag', 'link-9');">Tag</a></tt> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt>  <tt class="py-line"> </tt>
<a name="L12"></a><tt class="py-lineno"> 12</tt>  <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-10" class="py-name" targets="Package digichef=digichef-module.html"><a title="digichef" class="py-name" href="#" onclick="return doclink('link-10', 'digichef', 'link-10');">digichef</a></tt><tt class="py-op">.</tt><tt id="link-11" class="py-name" targets="Package digichef.util=digichef.util-module.html"><a title="digichef.util" class="py-name" href="#" onclick="return doclink('link-11', 'util', 'link-11');">util</a></tt><tt class="py-op">.</tt><tt id="link-12" class="py-name" targets="Module digichef.util.tools=digichef.util.tools-module.html"><a title="digichef.util.tools" class="py-name" href="#" onclick="return doclink('link-12', 'tools', 'link-12');">tools</a></tt> <tt class="py-keyword">import</tt> <tt id="link-13" class="py-name" targets="Function digichef.util.tools.poke()=digichef.util.tools-module.html#poke"><a title="digichef.util.tools.poke" class="py-name" href="#" onclick="return doclink('link-13', 'poke', 'link-13');">poke</a></tt><tt class="py-op">,</tt> <tt id="link-14" class="py-name" targets="Function digichef.util.tools.output()=digichef.util.tools-module.html#output"><a title="digichef.util.tools.output" class="py-name" href="#" onclick="return doclink('link-14', 'output', 'link-14');">output</a></tt> </tt>
<a name="L13"></a><tt class="py-lineno"> 13</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager"></a><div id="RecommenderManager-def"><a name="L14"></a><tt class="py-lineno"> 14</tt> <a class="py-toggle" href="#" id="RecommenderManager-toggle" onclick="return toggle('RecommenderManager');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html">RecommenderManager</a><tt class="py-op">(</tt><tt class="py-base-class">models</tt><tt class="py-op">.</tt><tt class="py-base-class">Manager</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="RecommenderManager-expanded"><a name="L15"></a><tt class="py-lineno"> 15</tt>  <tt class="py-line"> </tt>
<a name="L16"></a><tt class="py-lineno"> 16</tt>  <tt class="py-line">    <tt id="link-15" class="py-name" targets="Variable digichef.recommender.managers.RecommenderManager.MIN_RECOMMENDATION_VALUE=digichef.recommender.managers.RecommenderManager-class.html#MIN_RECOMMENDATION_VALUE"><a title="digichef.recommender.managers.RecommenderManager.MIN_RECOMMENDATION_VALUE" class="py-name" href="#" onclick="return doclink('link-15', 'MIN_RECOMMENDATION_VALUE', 'link-15');">MIN_RECOMMENDATION_VALUE</a></tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt>  <tt class="py-line">    <tt id="link-16" class="py-name" targets="Variable digichef.recommender.managers.RecommenderManager.MIN_SIMILARITY_VALUE=digichef.recommender.managers.RecommenderManager-class.html#MIN_SIMILARITY_VALUE"><a title="digichef.recommender.managers.RecommenderManager.MIN_SIMILARITY_VALUE" class="py-name" href="#" onclick="return doclink('link-16', 'MIN_SIMILARITY_VALUE', 'link-16');">MIN_SIMILARITY_VALUE</a></tt> <tt class="py-op">=</tt> <tt class="py-number">0.25</tt> </tt>
<a name="L18"></a><tt class="py-lineno"> 18</tt>  <tt class="py-line">    <tt id="link-17" class="py-name" targets="Variable digichef.recommender.managers.RecommenderManager.MIN_CONTENT_BASED_RECOMMENDATION_VALUE=digichef.recommender.managers.RecommenderManager-class.html#MIN_CONTENT_BASED_RECOMMENDATION_VALUE"><a title="digichef.recommender.managers.RecommenderManager.MIN_CONTENT_BASED_RECOMMENDATION_VALUE" class="py-name" href="#" onclick="return doclink('link-17', 'MIN_CONTENT_BASED_RECOMMENDATION_VALUE', 'link-17');">MIN_CONTENT_BASED_RECOMMENDATION_VALUE</a></tt> <tt class="py-op">=</tt> <tt class="py-number">0.25</tt> </tt>
<a name="L19"></a><tt class="py-lineno"> 19</tt>  <tt class="py-line">     </tt>
<a name="RecommenderManager.get_best_items_for_user"></a><div id="RecommenderManager.get_best_items_for_user-def"><a name="L20"></a><tt class="py-lineno"> 20</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_best_items_for_user-toggle" onclick="return toggle('RecommenderManager.get_best_items_for_user');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_best_items_for_user">get_best_items_for_user</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user</tt><tt class="py-op">,</tt> <tt class="py-param">user_list</tt><tt class="py-op">,</tt> <tt class="py-param">item_list</tt><tt class="py-op">,</tt> <tt class="py-param">min_value</tt><tt class="py-op">=</tt><tt id="link-18" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.MIN_RECOMMENDATION_VALUE" class="py-name" href="#" onclick="return doclink('link-18', 'MIN_RECOMMENDATION_VALUE', 'link-15');">MIN_RECOMMENDATION_VALUE</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_best_items_for_user-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_best_items_for_user-expanded"><a name="L21"></a><tt class="py-lineno"> 21</tt>  <tt class="py-line">        <tt class="py-name">user_item_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-19" class="py-name" targets="Method digichef.recommender.managers.RecommenderManager.create_matrix()=digichef.recommender.managers.RecommenderManager-class.html#create_matrix"><a title="digichef.recommender.managers.RecommenderManager.create_matrix" class="py-name" href="#" onclick="return doclink('link-19', 'create_matrix', 'link-19');">create_matrix</a></tt><tt class="py-op">(</tt><tt class="py-name">user_list</tt><tt class="py-op">,</tt> <tt class="py-name">item_list</tt><tt class="py-op">)</tt> </tt>
<a name="L22"></a><tt class="py-lineno"> 22</tt>  <tt class="py-line"> </tt>
<a name="L23"></a><tt class="py-lineno"> 23</tt>  <tt class="py-line">        <tt class="py-name">recs</tt> <tt class="py-op">=</tt> <tt id="link-20" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-20', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-21" class="py-name" targets="Function digichef.recommender.utils.get_usb_recommendations()=digichef.recommender.utils-module.html#get_usb_recommendations"><a title="digichef.recommender.utils.get_usb_recommendations" class="py-name" href="#" onclick="return doclink('link-21', 'get_usb_recommendations', 'link-21');">get_usb_recommendations</a></tt><tt class="py-op">(</tt><tt id="link-22" class="py-name" targets="Variable digichef.profiles.models.Profile.user=digichef.profiles.models.Profile-class.html#user,Variable digichef.registration.models.RegistrationProfile.user=digichef.registration.models.RegistrationProfile-class.html#user,Variable digichef.util.models.UserMeta.user=digichef.util.models.UserMeta-class.html#user,Variable digichef.voting.models.Vote.user=digichef.voting.models.Vote-class.html#user"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-22', 'user', 'link-22');">user</a></tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">,</tt> <tt class="py-name">user_item_matrix</tt><tt class="py-op">)</tt> </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt>  <tt class="py-line">        <tt class="py-name">recs</tt><tt class="py-op">.</tt><tt class="py-name">sort</tt><tt class="py-op">(</tt><tt class="py-name">reverse</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L25"></a><tt class="py-lineno"> 25</tt>  <tt class="py-line">         </tt>
<a name="L26"></a><tt class="py-lineno"> 26</tt>  <tt class="py-line">        <tt class="py-name">ctype</tt> <tt class="py-op">=</tt> <tt class="py-name">ContentType</tt><tt class="py-op">.</tt><tt id="link-23" class="py-name" targets="Variable digichef.recommender.models.Recommender.objects=digichef.recommender.models.Recommender-class.html#objects,Variable digichef.registration.models.RegistrationProfile.objects=digichef.registration.models.RegistrationProfile-class.html#objects,Variable digichef.tagging.models.Tag.objects=digichef.tagging.models.Tag-class.html#objects,Variable digichef.tagging.models.TaggedItem.objects=digichef.tagging.models.TaggedItem-class.html#objects,Variable digichef.voting.models.Vote.objects=digichef.voting.models.Vote-class.html#objects"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-23', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt class="py-name">get_for_model</tt><tt class="py-op">(</tt><tt class="py-name">item_list</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L27"></a><tt class="py-lineno"> 27</tt>  <tt class="py-line">        <tt class="py-name">items</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">(</tt><tt class="py-name">value</tt><tt class="py-op">,</tt><tt class="py-name">ctype</tt><tt class="py-op">.</tt><tt class="py-name">get_object_for_this_type</tt><tt class="py-op">(</tt><tt class="py-name">id</tt> <tt class="py-op">=</tt> <tt class="py-name">rec</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">value</tt><tt class="py-op">,</tt><tt class="py-name">rec</tt> <tt class="py-keyword">in</tt> <tt class="py-name">recs</tt> <tt class="py-keyword">if</tt> <tt class="py-name">value</tt><tt class="py-op">&gt;</tt><tt class="py-name">min_value</tt><tt class="py-op">]</tt> </tt>
<a name="L28"></a><tt class="py-lineno"> 28</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">items</tt> </tt>
</div><a name="L29"></a><tt class="py-lineno"> 29</tt>  <tt class="py-line">         </tt>
<a name="RecommenderManager.get_items_for_user"></a><div id="RecommenderManager.get_items_for_user-def"><a name="L30"></a><tt class="py-lineno"> 30</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_items_for_user-toggle" onclick="return toggle('RecommenderManager.get_items_for_user');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_items_for_user">get_items_for_user</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user</tt><tt class="py-op">,</tt> <tt class="py-param">itemtype</tt><tt class="py-op">,</tt> <tt class="py-param">min_value</tt><tt class="py-op">=</tt><tt id="link-24" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.MIN_RECOMMENDATION_VALUE" class="py-name" href="#" onclick="return doclink('link-24', 'MIN_RECOMMENDATION_VALUE', 'link-15');">MIN_RECOMMENDATION_VALUE</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_items_for_user-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_items_for_user-expanded"><a name="L31"></a><tt class="py-lineno"> 31</tt>  <tt class="py-line">        <tt class="py-name">items_voted</tt> <tt class="py-op">=</tt> <tt id="link-25" class="py-name"><a title="digichef.voting.models.Vote" class="py-name" href="#" onclick="return doclink('link-25', 'Vote', 'link-6');">Vote</a></tt><tt class="py-op">.</tt><tt id="link-26" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-26', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-27" class="py-name" targets="Method digichef.voting.managers.VoteManager.get_for_user_in_bulk()=digichef.voting.managers.VoteManager-class.html#get_for_user_in_bulk"><a title="digichef.voting.managers.VoteManager.get_for_user_in_bulk" class="py-name" href="#" onclick="return doclink('link-27', 'get_for_user_in_bulk', 'link-27');">get_for_user_in_bulk</a></tt><tt class="py-op">(</tt><tt class="py-name">itemtype</tt><tt class="py-op">.</tt><tt id="link-28" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-28', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt class="py-name">all</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt id="link-29" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-29', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt> </tt>
<a name="L32"></a><tt class="py-lineno"> 32</tt>  <tt class="py-line">        <tt class="py-name">items_liked</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt id="link-30" class="py-name" targets="Variable digichef.voting.models.Vote.vote=digichef.voting.models.Vote-class.html#vote"><a title="digichef.voting.models.Vote.vote" class="py-name" href="#" onclick="return doclink('link-30', 'vote', 'link-30');">vote</a></tt><tt class="py-op">.</tt><tt id="link-31" class="py-name" targets="Variable digichef.tagging.models.TaggedItem.object=digichef.tagging.models.TaggedItem-class.html#object,Variable digichef.voting.models.Vote.object=digichef.voting.models.Vote-class.html#object"><a title="digichef.tagging.models.TaggedItem.object
digichef.voting.models.Vote.object" class="py-name" href="#" onclick="return doclink('link-31', 'object', 'link-31');">object</a></tt> <tt class="py-keyword">for</tt> <tt class="py-name">number</tt><tt class="py-op">,</tt> <tt id="link-32" class="py-name"><a title="digichef.voting.models.Vote.vote" class="py-name" href="#" onclick="return doclink('link-32', 'vote', 'link-30');">vote</a></tt> <tt class="py-keyword">in</tt> <tt class="py-name">items_voted</tt><tt class="py-op">.</tt><tt class="py-name">items</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> <tt class="py-keyword">if</tt> <tt id="link-33" class="py-name"><a title="digichef.voting.models.Vote.vote" class="py-name" href="#" onclick="return doclink('link-33', 'vote', 'link-30');">vote</a></tt><tt class="py-op">.</tt><tt id="link-34" class="py-name" targets="Method digichef.voting.models.Vote.is_upvote()=digichef.voting.models.Vote-class.html#is_upvote"><a title="digichef.voting.models.Vote.is_upvote" class="py-name" href="#" onclick="return doclink('link-34', 'is_upvote', 'link-34');">is_upvote</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">]</tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt>  <tt class="py-line">        <tt class="py-name">items_disliked</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt id="link-35" class="py-name"><a title="digichef.voting.models.Vote.vote" class="py-name" href="#" onclick="return doclink('link-35', 'vote', 'link-30');">vote</a></tt><tt class="py-op">.</tt><tt id="link-36" class="py-name"><a title="digichef.tagging.models.TaggedItem.object
digichef.voting.models.Vote.object" class="py-name" href="#" onclick="return doclink('link-36', 'object', 'link-31');">object</a></tt> <tt class="py-keyword">for</tt> <tt class="py-name">number</tt><tt class="py-op">,</tt> <tt id="link-37" class="py-name"><a title="digichef.voting.models.Vote.vote" class="py-name" href="#" onclick="return doclink('link-37', 'vote', 'link-30');">vote</a></tt> <tt class="py-keyword">in</tt> <tt class="py-name">items_voted</tt><tt class="py-op">.</tt><tt class="py-name">items</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> <tt class="py-keyword">if</tt> <tt id="link-38" class="py-name"><a title="digichef.voting.models.Vote.vote" class="py-name" href="#" onclick="return doclink('link-38', 'vote', 'link-30');">vote</a></tt><tt class="py-op">.</tt><tt id="link-39" class="py-name" targets="Method digichef.voting.models.Vote.is_downvote()=digichef.voting.models.Vote-class.html#is_downvote"><a title="digichef.voting.models.Vote.is_downvote" class="py-name" href="#" onclick="return doclink('link-39', 'is_downvote', 'link-39');">is_downvote</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">]</tt> </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt>  <tt class="py-line">        <tt class="py-name">good_tags</tt> <tt class="py-op">=</tt> <tt class="py-name">set</tt><tt class="py-op">(</tt><tt class="py-op">[</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L35"></a><tt class="py-lineno"> 35</tt>  <tt class="py-line">        <tt class="py-name">bad_tags</tt> <tt class="py-op">=</tt> <tt class="py-name">set</tt><tt class="py-op">(</tt><tt class="py-op">[</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L36"></a><tt class="py-lineno"> 36</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">item</tt> <tt class="py-keyword">in</tt> <tt class="py-name">items_liked</tt><tt class="py-op">:</tt> </tt>
<a name="L37"></a><tt class="py-lineno"> 37</tt>  <tt class="py-line">            <tt class="py-keyword">for</tt> <tt id="link-40" class="py-name" targets="Variable digichef.tagging.models.TaggedItem.tag=digichef.tagging.models.TaggedItem-class.html#tag"><a title="digichef.tagging.models.TaggedItem.tag" class="py-name" href="#" onclick="return doclink('link-40', 'tag', 'link-40');">tag</a></tt> <tt class="py-keyword">in</tt> <tt class="py-name">item</tt><tt class="py-op">.</tt><tt id="link-41" class="py-name" targets="Variable digichef.recipes.models.Recipe.tags=digichef.recipes.models.Recipe-class.html#tags,Variable digichef.tagging.tests.models.FormTest.tags=digichef.tagging.tests.models.FormTest-class.html#tags"><a title="digichef.recipes.models.Recipe.tags
digichef.tagging.tests.models.FormTest.tags" class="py-name" href="#" onclick="return doclink('link-41', 'tags', 'link-41');">tags</a></tt><tt class="py-op">:</tt> </tt>
<a name="L38"></a><tt class="py-lineno"> 38</tt>  <tt class="py-line">                <tt class="py-name">good_tags</tt><tt class="py-op">.</tt><tt class="py-name">add</tt><tt class="py-op">(</tt><tt id="link-42" class="py-name"><a title="digichef.tagging.models.TaggedItem.tag" class="py-name" href="#" onclick="return doclink('link-42', 'tag', 'link-40');">tag</a></tt><tt class="py-op">)</tt> </tt>
<a name="L39"></a><tt class="py-lineno"> 39</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">item</tt> <tt class="py-keyword">in</tt> <tt class="py-name">items_disliked</tt><tt class="py-op">:</tt> </tt>
<a name="L40"></a><tt class="py-lineno"> 40</tt>  <tt class="py-line">            <tt class="py-keyword">for</tt> <tt id="link-43" class="py-name"><a title="digichef.tagging.models.TaggedItem.tag" class="py-name" href="#" onclick="return doclink('link-43', 'tag', 'link-40');">tag</a></tt> <tt class="py-keyword">in</tt> <tt class="py-name">item</tt><tt class="py-op">.</tt><tt id="link-44" class="py-name"><a title="digichef.recipes.models.Recipe.tags
digichef.tagging.tests.models.FormTest.tags" class="py-name" href="#" onclick="return doclink('link-44', 'tags', 'link-41');">tags</a></tt><tt class="py-op">:</tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt>  <tt class="py-line">                <tt class="py-name">bad_tags</tt><tt class="py-op">.</tt><tt class="py-name">add</tt><tt class="py-op">(</tt><tt id="link-45" class="py-name"><a title="digichef.tagging.models.TaggedItem.tag" class="py-name" href="#" onclick="return doclink('link-45', 'tag', 'link-40');">tag</a></tt><tt class="py-op">)</tt> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt>  <tt class="py-line">        <tt class="py-name">tagset</tt> <tt class="py-op">=</tt> <tt class="py-name">good_tags</tt><tt class="py-op">-</tt><tt class="py-name">bad_tags</tt> </tt>
<a name="L43"></a><tt class="py-lineno"> 43</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">sorted</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-46" class="py-name" targets="Method digichef.recommender.managers.RecommenderManager.get_by_relevance_to_tags()=digichef.recommender.managers.RecommenderManager-class.html#get_by_relevance_to_tags"><a title="digichef.recommender.managers.RecommenderManager.get_by_relevance_to_tags" class="py-name" href="#" onclick="return doclink('link-46', 'get_by_relevance_to_tags', 'link-46');">get_by_relevance_to_tags</a></tt><tt class="py-op">(</tt><tt class="py-name">tagset</tt><tt class="py-op">,</tt> <tt class="py-name">itemtype</tt><tt class="py-op">.</tt><tt id="link-47" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-47', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt class="py-name">all</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">min_value</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">reverse</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
</div><a name="L44"></a><tt class="py-lineno"> 44</tt>  <tt class="py-line"> </tt>
<a name="L45"></a><tt class="py-lineno"> 45</tt>  <tt class="py-line">         </tt>
<a name="L46"></a><tt class="py-lineno"> 46</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.get_similar_users"></a><div id="RecommenderManager.get_similar_users-def"><a name="L47"></a><tt class="py-lineno"> 47</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_similar_users-toggle" onclick="return toggle('RecommenderManager.get_similar_users');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_similar_users">get_similar_users</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user</tt><tt class="py-op">,</tt> <tt class="py-param">user_list</tt><tt class="py-op">,</tt> <tt class="py-param">item_list</tt><tt class="py-op">,</tt> <tt class="py-param">min_value</tt><tt class="py-op">=</tt><tt id="link-48" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.MIN_SIMILARITY_VALUE" class="py-name" href="#" onclick="return doclink('link-48', 'MIN_SIMILARITY_VALUE', 'link-16');">MIN_SIMILARITY_VALUE</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_similar_users-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_similar_users-expanded"><a name="L48"></a><tt class="py-lineno"> 48</tt>  <tt class="py-line">        <tt class="py-name">user_item_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-49" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.create_matrix" class="py-name" href="#" onclick="return doclink('link-49', 'create_matrix', 'link-19');">create_matrix</a></tt><tt class="py-op">(</tt><tt class="py-name">user_list</tt><tt class="py-op">,</tt> <tt class="py-name">item_list</tt><tt class="py-op">)</tt> </tt>
<a name="L49"></a><tt class="py-lineno"> 49</tt>  <tt class="py-line">        <tt class="py-name">sim_list</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L50"></a><tt class="py-lineno"> 50</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">other</tt> <tt class="py-keyword">in</tt> <tt class="py-name">user_list</tt><tt class="py-op">:</tt> </tt>
<a name="L51"></a><tt class="py-lineno"> 51</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt id="link-50" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-50', 'user', 'link-22');">user</a></tt><tt class="py-op">==</tt><tt class="py-name">other</tt><tt class="py-op">:</tt><tt class="py-keyword">continue</tt> </tt>
<a name="L52"></a><tt class="py-lineno"> 52</tt>  <tt class="py-line">            <tt class="py-name">sim</tt><tt class="py-op">=</tt><tt id="link-51" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-51', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-52" class="py-name" targets="Function digichef.recommender.utils.distance_matrix_p1_p2()=digichef.recommender.utils-module.html#distance_matrix_p1_p2"><a title="digichef.recommender.utils.distance_matrix_p1_p2" class="py-name" href="#" onclick="return doclink('link-52', 'distance_matrix_p1_p2', 'link-52');">distance_matrix_p1_p2</a></tt><tt class="py-op">(</tt><tt class="py-name">user_item_matrix</tt><tt class="py-op">[</tt><tt id="link-53" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-53', 'user', 'link-22');">user</a></tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">]</tt><tt class="py-op">,</tt><tt class="py-name">user_item_matrix</tt><tt class="py-op">[</tt><tt class="py-name">other</tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> <tt class="py-comment">#returns a 0..1 value</tt> </tt>
<a name="L53"></a><tt class="py-lineno"> 53</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">sim</tt><tt class="py-op">&gt;</tt><tt class="py-name">min_value</tt><tt class="py-op">:</tt> </tt>
<a name="L54"></a><tt class="py-lineno"> 54</tt>  <tt class="py-line">                <tt class="py-name">sim_list</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-op">(</tt><tt class="py-name">sim</tt><tt class="py-op">,</tt><tt class="py-name">other</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L55"></a><tt class="py-lineno"> 55</tt>  <tt class="py-line">             </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt>  <tt class="py-line">        <tt class="py-name">sim_list</tt><tt class="py-op">.</tt><tt class="py-name">sort</tt><tt class="py-op">(</tt><tt class="py-name">reverse</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">sim_list</tt> </tt>
</div><a name="L58"></a><tt class="py-lineno"> 58</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.get_best_users_for_item"></a><div id="RecommenderManager.get_best_users_for_item-def"><a name="L59"></a><tt class="py-lineno"> 59</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_best_users_for_item-toggle" onclick="return toggle('RecommenderManager.get_best_users_for_item');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_best_users_for_item">get_best_users_for_item</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">item</tt><tt class="py-op">,</tt> <tt class="py-param">user_list</tt><tt class="py-op">,</tt> <tt class="py-param">item_list</tt><tt class="py-op">,</tt> <tt class="py-param">min_value</tt><tt class="py-op">=</tt><tt id="link-54" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.MIN_RECOMMENDATION_VALUE" class="py-name" href="#" onclick="return doclink('link-54', 'MIN_RECOMMENDATION_VALUE', 'link-15');">MIN_RECOMMENDATION_VALUE</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_best_users_for_item-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_best_users_for_item-expanded"><a name="L60"></a><tt class="py-lineno"> 60</tt>  <tt class="py-line">        <tt class="py-name">user_item_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-55" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.create_matrix" class="py-name" href="#" onclick="return doclink('link-55', 'create_matrix', 'link-19');">create_matrix</a></tt><tt class="py-op">(</tt><tt class="py-name">user_list</tt><tt class="py-op">,</tt> <tt class="py-name">item_list</tt><tt class="py-op">)</tt> </tt>
<a name="L61"></a><tt class="py-lineno"> 61</tt>  <tt class="py-line">        <tt class="py-name">item_user_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-56" class="py-name" targets="Method digichef.recommender.managers.RecommenderManager.rotate_matrix()=digichef.recommender.managers.RecommenderManager-class.html#rotate_matrix"><a title="digichef.recommender.managers.RecommenderManager.rotate_matrix" class="py-name" href="#" onclick="return doclink('link-56', 'rotate_matrix', 'link-56');">rotate_matrix</a></tt><tt class="py-op">(</tt><tt class="py-name">user_item_matrix</tt><tt class="py-op">)</tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt>  <tt class="py-line"> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt>  <tt class="py-line">        <tt class="py-name">recs</tt> <tt class="py-op">=</tt> <tt id="link-57" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-57', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-58" class="py-name"><a title="digichef.recommender.utils.get_usb_recommendations" class="py-name" href="#" onclick="return doclink('link-58', 'get_usb_recommendations', 'link-21');">get_usb_recommendations</a></tt><tt class="py-op">(</tt><tt class="py-name">item</tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">,</tt> <tt class="py-name">item_user_matrix</tt><tt class="py-op">)</tt> </tt>
<a name="L64"></a><tt class="py-lineno"> 64</tt>  <tt class="py-line">        <tt class="py-name">recs</tt><tt class="py-op">.</tt><tt class="py-name">sort</tt><tt class="py-op">(</tt><tt class="py-name">reverse</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt>  <tt class="py-line"> </tt>
<a name="L66"></a><tt class="py-lineno"> 66</tt>  <tt class="py-line">        <tt id="link-59" class="py-name" targets="Variable digichef.addpeople.users=digichef.addpeople-module.html#users"><a title="digichef.addpeople.users" class="py-name" href="#" onclick="return doclink('link-59', 'users', 'link-59');">users</a></tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">(</tt><tt class="py-name">value</tt><tt class="py-op">,</tt><tt class="py-name">User</tt><tt class="py-op">.</tt><tt id="link-60" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-60', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt class="py-name">get</tt><tt class="py-op">(</tt><tt class="py-name">id</tt> <tt class="py-op">=</tt> <tt class="py-name">rec</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">value</tt><tt class="py-op">,</tt><tt class="py-name">rec</tt> <tt class="py-keyword">in</tt> <tt class="py-name">recs</tt> <tt class="py-keyword">if</tt> <tt class="py-name">value</tt><tt class="py-op">&gt;</tt><tt class="py-name">min_value</tt><tt class="py-op">]</tt> </tt>
<a name="L67"></a><tt class="py-lineno"> 67</tt>  <tt class="py-line">         </tt>
<a name="L68"></a><tt class="py-lineno"> 68</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt id="link-61" class="py-name"><a title="digichef.addpeople.users" class="py-name" href="#" onclick="return doclink('link-61', 'users', 'link-59');">users</a></tt> </tt>
</div><a name="L69"></a><tt class="py-lineno"> 69</tt>  <tt class="py-line">     </tt>
<a name="RecommenderManager.get_similar_items"></a><div id="RecommenderManager.get_similar_items-def"><a name="L70"></a><tt class="py-lineno"> 70</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_similar_items-toggle" onclick="return toggle('RecommenderManager.get_similar_items');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_similar_items">get_similar_items</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">item</tt><tt class="py-op">,</tt> <tt class="py-param">user_list</tt><tt class="py-op">,</tt> <tt class="py-param">item_list</tt><tt class="py-op">,</tt> <tt class="py-param">min_value</tt><tt class="py-op">=</tt><tt id="link-62" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.MIN_SIMILARITY_VALUE" class="py-name" href="#" onclick="return doclink('link-62', 'MIN_SIMILARITY_VALUE', 'link-16');">MIN_SIMILARITY_VALUE</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_similar_items-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_similar_items-expanded"><a name="L71"></a><tt class="py-lineno"> 71</tt>  <tt class="py-line">        <tt class="py-name">user_item_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-63" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.create_matrix" class="py-name" href="#" onclick="return doclink('link-63', 'create_matrix', 'link-19');">create_matrix</a></tt><tt class="py-op">(</tt><tt class="py-name">user_list</tt><tt class="py-op">,</tt> <tt class="py-name">item_list</tt><tt class="py-op">)</tt> </tt>
<a name="L72"></a><tt class="py-lineno"> 72</tt>  <tt class="py-line">        <tt class="py-name">item_user_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-64" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.rotate_matrix" class="py-name" href="#" onclick="return doclink('link-64', 'rotate_matrix', 'link-56');">rotate_matrix</a></tt><tt class="py-op">(</tt><tt class="py-name">user_item_matrix</tt><tt class="py-op">)</tt> </tt>
<a name="L73"></a><tt class="py-lineno"> 73</tt>  <tt class="py-line"><tt class="py-comment">#       assert False, (user_item_matrix, item_user_matrix)</tt> </tt>
<a name="L74"></a><tt class="py-lineno"> 74</tt>  <tt class="py-line">        <tt class="py-name">sim_list</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L75"></a><tt class="py-lineno"> 75</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">other</tt> <tt class="py-keyword">in</tt> <tt class="py-name">item_list</tt><tt class="py-op">:</tt> </tt>
<a name="L76"></a><tt class="py-lineno"> 76</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">item</tt><tt class="py-op">==</tt><tt class="py-name">other</tt><tt class="py-op">:</tt><tt class="py-keyword">continue</tt> </tt>
<a name="L77"></a><tt class="py-lineno"> 77</tt>  <tt class="py-line">            <tt class="py-name">sim</tt><tt class="py-op">=</tt><tt id="link-65" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-65', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-66" class="py-name"><a title="digichef.recommender.utils.distance_matrix_p1_p2" class="py-name" href="#" onclick="return doclink('link-66', 'distance_matrix_p1_p2', 'link-52');">distance_matrix_p1_p2</a></tt><tt class="py-op">(</tt><tt class="py-name">item_user_matrix</tt><tt class="py-op">[</tt><tt class="py-name">item</tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">]</tt><tt class="py-op">,</tt><tt class="py-name">item_user_matrix</tt><tt class="py-op">[</tt><tt class="py-name">other</tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> <tt class="py-comment">#returns a 0..1 value</tt> </tt>
<a name="L78"></a><tt class="py-lineno"> 78</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">sim</tt><tt class="py-op">&gt;</tt><tt class="py-name">min_value</tt><tt class="py-op">:</tt> </tt>
<a name="L79"></a><tt class="py-lineno"> 79</tt>  <tt class="py-line">                <tt class="py-name">sim_list</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-op">(</tt><tt class="py-name">sim</tt><tt class="py-op">,</tt><tt class="py-name">other</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L80"></a><tt class="py-lineno"> 80</tt>  <tt class="py-line">             </tt>
<a name="L81"></a><tt class="py-lineno"> 81</tt>  <tt class="py-line">        <tt class="py-name">sim_list</tt><tt class="py-op">.</tt><tt class="py-name">sort</tt><tt class="py-op">(</tt><tt class="py-name">reverse</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L82"></a><tt class="py-lineno"> 82</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">sim_list</tt> </tt>
</div><a name="L83"></a><tt class="py-lineno"> 83</tt>  <tt class="py-line">         </tt>
<a name="L84"></a><tt class="py-lineno"> 84</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.get_similar_items_from_model"></a><div id="RecommenderManager.get_similar_items_from_model-def"><a name="L85"></a><tt class="py-lineno"> 85</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_similar_items_from_model-toggle" onclick="return toggle('RecommenderManager.get_similar_items_from_model');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_similar_items_from_model">get_similar_items_from_model</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">item</tt><tt class="py-op">,</tt> <tt class="py-param">user_list</tt><tt class="py-op">,</tt> <tt class="py-param">model</tt><tt class="py-op">,</tt> <tt class="py-param">min_value</tt><tt class="py-op">=</tt><tt id="link-67" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.MIN_SIMILARITY_VALUE" class="py-name" href="#" onclick="return doclink('link-67', 'MIN_SIMILARITY_VALUE', 'link-16');">MIN_SIMILARITY_VALUE</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_similar_items_from_model-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_similar_items_from_model-expanded"><a name="L86"></a><tt class="py-lineno"> 86</tt>  <tt class="py-line">        <tt class="py-name">user_item_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-68" class="py-name" targets="Method digichef.recommender.managers.RecommenderManager.create_matrix_from_model()=digichef.recommender.managers.RecommenderManager-class.html#create_matrix_from_model"><a title="digichef.recommender.managers.RecommenderManager.create_matrix_from_model" class="py-name" href="#" onclick="return doclink('link-68', 'create_matrix_from_model', 'link-68');">create_matrix_from_model</a></tt><tt class="py-op">(</tt><tt class="py-name">user_list</tt><tt class="py-op">,</tt> <tt id="link-69" class="py-name" targets="Variable digichef.profiles.forms.ProfileForm.Meta.model=digichef.profiles.forms.ProfileForm.Meta-class.html#model,Variable digichef.tagging.forms.TagAdminForm.Meta.model=digichef.tagging.forms.TagAdminForm.Meta-class.html#model"><a title="digichef.profiles.forms.ProfileForm.Meta.model
digichef.tagging.forms.TagAdminForm.Meta.model" class="py-name" href="#" onclick="return doclink('link-69', 'model', 'link-69');">model</a></tt><tt class="py-op">)</tt> </tt>
<a name="L87"></a><tt class="py-lineno"> 87</tt>  <tt class="py-line">        <tt class="py-name">item_user_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-70" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.rotate_matrix" class="py-name" href="#" onclick="return doclink('link-70', 'rotate_matrix', 'link-56');">rotate_matrix</a></tt><tt class="py-op">(</tt><tt class="py-name">user_item_matrix</tt><tt class="py-op">)</tt> </tt>
<a name="L88"></a><tt class="py-lineno"> 88</tt>  <tt class="py-line"><tt class="py-comment">#       assert False, (user_item_matrix, item_user_matrix)</tt> </tt>
<a name="L89"></a><tt class="py-lineno"> 89</tt>  <tt class="py-line">        <tt class="py-name">sim_list</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L90"></a><tt class="py-lineno"> 90</tt>  <tt class="py-line">        <tt class="py-name">item_list</tt><tt class="py-op">=</tt><tt id="link-71" class="py-name"><a title="digichef.profiles.forms.ProfileForm.Meta.model
digichef.tagging.forms.TagAdminForm.Meta.model" class="py-name" href="#" onclick="return doclink('link-71', 'model', 'link-69');">model</a></tt><tt class="py-op">.</tt><tt id="link-72" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-72', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt class="py-name">all</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L91"></a><tt class="py-lineno"> 91</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">other</tt> <tt class="py-keyword">in</tt> <tt class="py-name">item_list</tt><tt class="py-op">:</tt> </tt>
<a name="L92"></a><tt class="py-lineno"> 92</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">item</tt><tt class="py-op">==</tt><tt class="py-name">other</tt><tt class="py-op">:</tt><tt class="py-keyword">continue</tt> </tt>
<a name="L93"></a><tt class="py-lineno"> 93</tt>  <tt class="py-line"><tt class="py-comment">#           assert False, item_user_matrix[item.id]</tt> </tt>
<a name="L94"></a><tt class="py-lineno"> 94</tt>  <tt class="py-line"><tt class="py-comment">#            sim=utils.distance_matrix_p1_p2(item_user_matrix[item.id],item_user_matrix[other.id]) #returns a 0..1 value</tt> </tt>
<a name="L95"></a><tt class="py-lineno"> 95</tt>  <tt class="py-line">            <tt class="py-name">sim</tt><tt class="py-op">=</tt><tt id="link-73" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-73', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-74" class="py-name"><a title="digichef.recommender.utils.distance_matrix_p1_p2" class="py-name" href="#" onclick="return doclink('link-74', 'distance_matrix_p1_p2', 'link-52');">distance_matrix_p1_p2</a></tt><tt class="py-op">(</tt><tt class="py-name">item_user_matrix</tt><tt class="py-op">.</tt><tt class="py-name">get</tt><tt class="py-op">(</tt><tt class="py-name">item</tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">,</tt> </tt>
<a name="L96"></a><tt class="py-lineno"> 96</tt>  <tt class="py-line">                        <tt class="py-op">{</tt><tt class="py-number">1</tt><tt class="py-op">:</tt><tt id="link-75" class="py-name"><a title="digichef.voting.models.Vote" class="py-name" href="#" onclick="return doclink('link-75', 'Vote', 'link-6');">Vote</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">}</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> </tt>
<a name="L97"></a><tt class="py-lineno"> 97</tt>  <tt class="py-line">                <tt class="py-name">item_user_matrix</tt><tt class="py-op">.</tt><tt class="py-name">get</tt><tt class="py-op">(</tt><tt class="py-name">other</tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">,</tt>  </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt>  <tt class="py-line">                        <tt class="py-op">{</tt><tt class="py-number">1</tt><tt class="py-op">:</tt><tt id="link-76" class="py-name"><a title="digichef.voting.models.Vote" class="py-name" href="#" onclick="return doclink('link-76', 'Vote', 'link-6');">Vote</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">}</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt>  <tt class="py-line">            <tt class="py-string">"""</tt> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt>  <tt class="py-line"><tt class="py-string">            sim=utils.distance_matrix_p1_p2(item_user_matrix.get(item.id,</tt> </tt>
<a name="L101"></a><tt class="py-lineno">101</tt>  <tt class="py-line"><tt class="py-string">                        {1:Vote(        object=item,</tt> </tt>
<a name="L102"></a><tt class="py-lineno">102</tt>  <tt class="py-line"><tt class="py-string">                                object_id=item.id,</tt> </tt>
<a name="L103"></a><tt class="py-lineno">103</tt>  <tt class="py-line"><tt class="py-string">                                user=user_list[0],</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt>  <tt class="py-line"><tt class="py-string">                                vote=0,</tt> </tt>
<a name="L105"></a><tt class="py-lineno">105</tt>  <tt class="py-line"><tt class="py-string">                                content_type=ContentType.objects.get_for_model(item)</tt> </tt>
<a name="L106"></a><tt class="py-lineno">106</tt>  <tt class="py-line"><tt class="py-string">                        )}),</tt> </tt>
<a name="L107"></a><tt class="py-lineno">107</tt>  <tt class="py-line"><tt class="py-string">                item_user_matrix.get(other.id, </tt> </tt>
<a name="L108"></a><tt class="py-lineno">108</tt>  <tt class="py-line"><tt class="py-string">                        {1:Vote(        object=item,</tt> </tt>
<a name="L109"></a><tt class="py-lineno">109</tt>  <tt class="py-line"><tt class="py-string">                                object_id=item.id,</tt> </tt>
<a name="L110"></a><tt class="py-lineno">110</tt>  <tt class="py-line"><tt class="py-string">                                user=user_list[0],</tt> </tt>
<a name="L111"></a><tt class="py-lineno">111</tt>  <tt class="py-line"><tt class="py-string">                                vote=0,</tt> </tt>
<a name="L112"></a><tt class="py-lineno">112</tt>  <tt class="py-line"><tt class="py-string">                                content_type=ContentType.objects.get_for_model(item)</tt> </tt>
<a name="L113"></a><tt class="py-lineno">113</tt>  <tt class="py-line"><tt class="py-string">                        )}</tt> </tt>
<a name="L114"></a><tt class="py-lineno">114</tt>  <tt class="py-line"><tt class="py-string">                )) #returns a 0..1 value</tt> </tt>
<a name="L115"></a><tt class="py-lineno">115</tt>  <tt class="py-line"><tt class="py-string">            """</tt> </tt>
<a name="L116"></a><tt class="py-lineno">116</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">sim</tt><tt class="py-op">&gt;</tt><tt class="py-name">min_value</tt><tt class="py-op">:</tt> </tt>
<a name="L117"></a><tt class="py-lineno">117</tt>  <tt class="py-line">                <tt class="py-name">sim_list</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-op">(</tt><tt class="py-name">sim</tt><tt class="py-op">,</tt><tt class="py-name">other</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L118"></a><tt class="py-lineno">118</tt>  <tt class="py-line"> </tt>
<a name="L119"></a><tt class="py-lineno">119</tt>  <tt class="py-line">        <tt class="py-keyword">assert</tt> <tt class="py-name">False</tt><tt class="py-op">,</tt> <tt class="py-name">sim_list</tt>             </tt>
<a name="L120"></a><tt class="py-lineno">120</tt>  <tt class="py-line">        <tt class="py-name">sim_list</tt><tt class="py-op">.</tt><tt class="py-name">sort</tt><tt class="py-op">(</tt><tt class="py-name">reverse</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
<a name="L121"></a><tt class="py-lineno">121</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">sim_list</tt> </tt>
</div><a name="L122"></a><tt class="py-lineno">122</tt>  <tt class="py-line">         </tt>
<a name="L123"></a><tt class="py-lineno">123</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.create_matrix"></a><div id="RecommenderManager.create_matrix-def"><a name="L124"></a><tt class="py-lineno">124</tt> <a class="py-toggle" href="#" id="RecommenderManager.create_matrix-toggle" onclick="return toggle('RecommenderManager.create_matrix');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#create_matrix">create_matrix</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">users</tt><tt class="py-op">,</tt> <tt class="py-param">items</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.create_matrix-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.create_matrix-expanded"><a name="L125"></a><tt class="py-lineno">125</tt>  <tt class="py-line">        <tt class="py-name">user_item_matrix</tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L126"></a><tt class="py-lineno">126</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt id="link-77" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-77', 'user', 'link-22');">user</a></tt> <tt class="py-keyword">in</tt> <tt id="link-78" class="py-name"><a title="digichef.addpeople.users" class="py-name" href="#" onclick="return doclink('link-78', 'users', 'link-59');">users</a></tt><tt class="py-op">:</tt> </tt>
<a name="L127"></a><tt class="py-lineno">127</tt>  <tt class="py-line">            <tt class="py-name">votes_for_user</tt> <tt class="py-op">=</tt> <tt id="link-79" class="py-name"><a title="digichef.voting.models.Vote" class="py-name" href="#" onclick="return doclink('link-79', 'Vote', 'link-6');">Vote</a></tt><tt class="py-op">.</tt><tt id="link-80" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-80', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-81" class="py-name"><a title="digichef.voting.managers.VoteManager.get_for_user_in_bulk" class="py-name" href="#" onclick="return doclink('link-81', 'get_for_user_in_bulk', 'link-27');">get_for_user_in_bulk</a></tt><tt class="py-op">(</tt><tt class="py-name">items</tt><tt class="py-op">,</tt> <tt id="link-82" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-82', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt>  <tt class="py-line">            <tt class="py-name">user_item_matrix</tt><tt class="py-op">[</tt><tt id="link-83" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-83', 'user', 'link-22');">user</a></tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">votes_for_user</tt> </tt>
<a name="L129"></a><tt class="py-lineno">129</tt>  <tt class="py-line">         </tt>
<a name="L130"></a><tt class="py-lineno">130</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">user_item_matrix</tt> </tt>
</div><a name="L131"></a><tt class="py-lineno">131</tt>  <tt class="py-line">     </tt>
<a name="RecommenderManager.create_matrix_from_model"></a><div id="RecommenderManager.create_matrix_from_model-def"><a name="L132"></a><tt class="py-lineno">132</tt> <a class="py-toggle" href="#" id="RecommenderManager.create_matrix_from_model-toggle" onclick="return toggle('RecommenderManager.create_matrix_from_model');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#create_matrix_from_model">create_matrix_from_model</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">users</tt><tt class="py-op">,</tt> <tt class="py-param">model</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.create_matrix_from_model-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.create_matrix_from_model-expanded"><a name="L133"></a><tt class="py-lineno">133</tt>  <tt class="py-line">        <tt class="py-name">user_item_matrix</tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L134"></a><tt class="py-lineno">134</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt id="link-84" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-84', 'user', 'link-22');">user</a></tt> <tt class="py-keyword">in</tt> <tt id="link-85" class="py-name"><a title="digichef.addpeople.users" class="py-name" href="#" onclick="return doclink('link-85', 'users', 'link-59');">users</a></tt><tt class="py-op">:</tt> </tt>
<a name="L135"></a><tt class="py-lineno">135</tt>  <tt class="py-line">            <tt class="py-name">votes_for_user</tt> <tt class="py-op">=</tt> <tt id="link-86" class="py-name"><a title="digichef.voting.models.Vote" class="py-name" href="#" onclick="return doclink('link-86', 'Vote', 'link-6');">Vote</a></tt><tt class="py-op">.</tt><tt id="link-87" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-87', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-88" class="py-name" targets="Method digichef.voting.managers.VoteManager.get_for_user_from_model()=digichef.voting.managers.VoteManager-class.html#get_for_user_from_model"><a title="digichef.voting.managers.VoteManager.get_for_user_from_model" class="py-name" href="#" onclick="return doclink('link-88', 'get_for_user_from_model', 'link-88');">get_for_user_from_model</a></tt><tt class="py-op">(</tt><tt id="link-89" class="py-name"><a title="digichef.profiles.forms.ProfileForm.Meta.model
digichef.tagging.forms.TagAdminForm.Meta.model" class="py-name" href="#" onclick="return doclink('link-89', 'model', 'link-69');">model</a></tt><tt class="py-op">,</tt> <tt id="link-90" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-90', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt> </tt>
<a name="L136"></a><tt class="py-lineno">136</tt>  <tt class="py-line">            <tt class="py-name">user_item_matrix</tt><tt class="py-op">[</tt><tt id="link-91" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-91', 'user', 'link-22');">user</a></tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">votes_for_user</tt> </tt>
<a name="L137"></a><tt class="py-lineno">137</tt>  <tt class="py-line">         </tt>
<a name="L138"></a><tt class="py-lineno">138</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">user_item_matrix</tt> </tt>
</div><a name="L139"></a><tt class="py-lineno">139</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.rotate_matrix"></a><div id="RecommenderManager.rotate_matrix-def"><a name="L140"></a><tt class="py-lineno">140</tt> <a class="py-toggle" href="#" id="RecommenderManager.rotate_matrix-toggle" onclick="return toggle('RecommenderManager.rotate_matrix');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#rotate_matrix">rotate_matrix</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">matrix</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.rotate_matrix-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.rotate_matrix-expanded"><a name="L141"></a><tt class="py-lineno">141</tt>  <tt class="py-line">        <tt class="py-name">rotated_matrix</tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L142"></a><tt class="py-lineno">142</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt id="link-92" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-92', 'user', 'link-22');">user</a></tt> <tt class="py-keyword">in</tt> <tt class="py-name">matrix</tt><tt class="py-op">:</tt> </tt>
<a name="L143"></a><tt class="py-lineno">143</tt>  <tt class="py-line">            <tt class="py-keyword">for</tt> <tt class="py-name">item</tt> <tt class="py-keyword">in</tt> <tt class="py-name">matrix</tt><tt class="py-op">[</tt><tt id="link-93" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-93', 'user', 'link-22');">user</a></tt><tt class="py-op">]</tt><tt class="py-op">:</tt> </tt>
<a name="L144"></a><tt class="py-lineno">144</tt>  <tt class="py-line">                <tt class="py-name">rotated_matrix</tt><tt class="py-op">.</tt><tt class="py-name">setdefault</tt><tt class="py-op">(</tt><tt class="py-name">item</tt><tt class="py-op">,</tt><tt class="py-op">{</tt><tt class="py-op">}</tt><tt class="py-op">)</tt> </tt>
<a name="L145"></a><tt class="py-lineno">145</tt>  <tt class="py-line">                <tt class="py-name">rotated_matrix</tt><tt class="py-op">[</tt><tt class="py-name">item</tt><tt class="py-op">]</tt><tt class="py-op">[</tt><tt id="link-94" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-94', 'user', 'link-22');">user</a></tt><tt class="py-op">]</tt><tt class="py-op">=</tt><tt class="py-name">matrix</tt><tt class="py-op">[</tt><tt id="link-95" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-95', 'user', 'link-22');">user</a></tt><tt class="py-op">]</tt><tt class="py-op">[</tt><tt class="py-name">item</tt><tt class="py-op">]</tt> </tt>
<a name="L146"></a><tt class="py-lineno">146</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">rotated_matrix</tt> </tt>
</div><a name="L147"></a><tt class="py-lineno">147</tt>  <tt class="py-line">         </tt>
<a name="L148"></a><tt class="py-lineno">148</tt>  <tt class="py-line"><tt class="py-comment"># Content Based Recommendations</tt> </tt>
<a name="RecommenderManager.get_content_based_recs"></a><div id="RecommenderManager.get_content_based_recs-def"><a name="L149"></a><tt class="py-lineno">149</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_content_based_recs-toggle" onclick="return toggle('RecommenderManager.get_content_based_recs');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_content_based_recs">get_content_based_recs</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user</tt><tt class="py-op">,</tt> <tt class="py-param">tagged_items</tt><tt class="py-op">,</tt> <tt class="py-param">min_value</tt><tt class="py-op">=</tt><tt id="link-96" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.MIN_CONTENT_BASED_RECOMMENDATION_VALUE" class="py-name" href="#" onclick="return doclink('link-96', 'MIN_CONTENT_BASED_RECOMMENDATION_VALUE', 'link-17');">MIN_CONTENT_BASED_RECOMMENDATION_VALUE</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_content_based_recs-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_content_based_recs-expanded"><a name="L150"></a><tt class="py-lineno">150</tt>  <tt class="py-line">        <tt class="py-docstring">''' For a given user tags and a dicc of item tags, returns the distances between the user and the items</tt> </tt>
<a name="L151"></a><tt class="py-lineno">151</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; eng=RecommenderManager()</tt> </tt>
<a name="L152"></a><tt class="py-lineno">152</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; user_tags=['a','b','c','d']</tt> </tt>
<a name="L153"></a><tt class="py-lineno">153</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; tag_matrix={}</tt> </tt>
<a name="L154"></a><tt class="py-lineno">154</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; tag_matrix['it1']=['z','a','c']</tt> </tt>
<a name="L155"></a><tt class="py-lineno">155</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; tag_matrix['it2']=['b','c']</tt> </tt>
<a name="L156"></a><tt class="py-lineno">156</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; tag_matrix['it3']=['a','r','t','v']</tt> </tt>
<a name="L157"></a><tt class="py-lineno">157</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; eng.get_content_based_recs(user_tags,tag_matrix)</tt> </tt>
<a name="L158"></a><tt class="py-lineno">158</tt>  <tt class="py-line"><tt class="py-docstring">            [(7.5, 'it1'), (10.0, 'it2'), (5.0, 'it3')]</tt> </tt>
<a name="L159"></a><tt class="py-lineno">159</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L160"></a><tt class="py-lineno">160</tt>  <tt class="py-line"> </tt>
<a name="L161"></a><tt class="py-lineno">161</tt>  <tt class="py-line">        <tt class="py-name">item_tag_matrix</tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L162"></a><tt class="py-lineno">162</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">item</tt> <tt class="py-keyword">in</tt> <tt class="py-name">tagged_items</tt><tt class="py-op">:</tt> </tt>
<a name="L163"></a><tt class="py-lineno">163</tt>  <tt class="py-line">            <tt class="py-name">item_tag_matrix</tt><tt class="py-op">[</tt><tt class="py-name">item</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt id="link-97" class="py-name"><a title="digichef.tagging.models.Tag" class="py-name" href="#" onclick="return doclink('link-97', 'Tag', 'link-9');">Tag</a></tt><tt class="py-op">.</tt><tt id="link-98" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-98', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-99" class="py-name" targets="Method digichef.tagging.models.TagManager.get_for_object()=digichef.tagging.models.TagManager-class.html#get_for_object"><a title="digichef.tagging.models.TagManager.get_for_object" class="py-name" href="#" onclick="return doclink('link-99', 'get_for_object', 'link-99');">get_for_object</a></tt><tt class="py-op">(</tt><tt class="py-name">item</tt><tt class="py-op">)</tt> </tt>
<a name="L164"></a><tt class="py-lineno">164</tt>  <tt class="py-line">         </tt>
<a name="L165"></a><tt class="py-lineno">165</tt>  <tt class="py-line">        <tt class="py-name">user_tags</tt> <tt class="py-op">=</tt> <tt id="link-100" class="py-name"><a title="digichef.tagging.models.Tag" class="py-name" href="#" onclick="return doclink('link-100', 'Tag', 'link-9');">Tag</a></tt><tt class="py-op">.</tt><tt id="link-101" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-101', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-102" class="py-name"><a title="digichef.tagging.models.TagManager.get_for_object" class="py-name" href="#" onclick="return doclink('link-102', 'get_for_object', 'link-99');">get_for_object</a></tt><tt class="py-op">(</tt><tt id="link-103" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-103', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt> </tt>
<a name="L166"></a><tt class="py-lineno">166</tt>  <tt class="py-line"> </tt>
<a name="L167"></a><tt class="py-lineno">167</tt>  <tt class="py-line">        <tt class="py-name">recs</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L168"></a><tt class="py-lineno">168</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">item</tt><tt class="py-op">,</tt><tt class="py-name">item_tags</tt> <tt class="py-keyword">in</tt> <tt class="py-name">item_tag_matrix</tt><tt class="py-op">.</tt><tt class="py-name">items</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L169"></a><tt class="py-lineno">169</tt>  <tt class="py-line">            <tt class="py-name">sim</tt> <tt class="py-op">=</tt> <tt id="link-104" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-104', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-105" class="py-name" targets="Function digichef.recommender.utils.tanamoto2()=digichef.recommender.utils-module.html#tanamoto2"><a title="digichef.recommender.utils.tanamoto2" class="py-name" href="#" onclick="return doclink('link-105', 'tanamoto2', 'link-105');">tanamoto2</a></tt><tt class="py-op">(</tt><tt class="py-name">item_tags</tt><tt class="py-op">,</tt> <tt class="py-name">user_tags</tt><tt class="py-op">)</tt> </tt>
<a name="L170"></a><tt class="py-lineno">170</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">sim</tt><tt class="py-op">&gt;</tt><tt class="py-name">min_value</tt><tt class="py-op">:</tt> </tt>
<a name="L171"></a><tt class="py-lineno">171</tt>  <tt class="py-line">                <tt class="py-name">recs</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-op">(</tt><tt class="py-name">sim</tt><tt class="py-op">,</tt> <tt class="py-name">item</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L172"></a><tt class="py-lineno">172</tt>  <tt class="py-line">                 </tt>
<a name="L173"></a><tt class="py-lineno">173</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">recs</tt> </tt>
</div><a name="L174"></a><tt class="py-lineno">174</tt>  <tt class="py-line"> </tt>
<a name="L175"></a><tt class="py-lineno">175</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.get_by_relevance_to_tags"></a><div id="RecommenderManager.get_by_relevance_to_tags-def"><a name="L176"></a><tt class="py-lineno">176</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_by_relevance_to_tags-toggle" onclick="return toggle('RecommenderManager.get_by_relevance_to_tags');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_by_relevance_to_tags">get_by_relevance_to_tags</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">search_tags</tt><tt class="py-op">,</tt> <tt class="py-param">tagged_items</tt><tt class="py-op">,</tt> <tt class="py-param">min_value</tt><tt class="py-op">=</tt><tt id="link-106" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.MIN_CONTENT_BASED_RECOMMENDATION_VALUE" class="py-name" href="#" onclick="return doclink('link-106', 'MIN_CONTENT_BASED_RECOMMENDATION_VALUE', 'link-17');">MIN_CONTENT_BASED_RECOMMENDATION_VALUE</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_by_relevance_to_tags-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_by_relevance_to_tags-expanded"><a name="L177"></a><tt class="py-lineno">177</tt>  <tt class="py-line">        <tt class="py-docstring">''' For a given user tags and a dicc of item tags, returns the distances between the user and the items</tt> </tt>
<a name="L178"></a><tt class="py-lineno">178</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; eng=RecommenderManager()</tt> </tt>
<a name="L179"></a><tt class="py-lineno">179</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; user_tags=['a','b','c','d']</tt> </tt>
<a name="L180"></a><tt class="py-lineno">180</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; tag_matrix={}</tt> </tt>
<a name="L181"></a><tt class="py-lineno">181</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; tag_matrix['it1']=['z','a','c']</tt> </tt>
<a name="L182"></a><tt class="py-lineno">182</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; tag_matrix['it2']=['b','c']</tt> </tt>
<a name="L183"></a><tt class="py-lineno">183</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; tag_matrix['it3']=['a','r','t','v']</tt> </tt>
<a name="L184"></a><tt class="py-lineno">184</tt>  <tt class="py-line"><tt class="py-docstring">            &gt;&gt;&gt; eng.get_content_based_recs(user_tags,tag_matrix)</tt> </tt>
<a name="L185"></a><tt class="py-lineno">185</tt>  <tt class="py-line"><tt class="py-docstring">            [(7.5, 'it1'), (10.0, 'it2'), (5.0, 'it3')]</tt> </tt>
<a name="L186"></a><tt class="py-lineno">186</tt>  <tt class="py-line"><tt class="py-docstring">        '''</tt> </tt>
<a name="L187"></a><tt class="py-lineno">187</tt>  <tt class="py-line"> </tt>
<a name="L188"></a><tt class="py-lineno">188</tt>  <tt class="py-line">        <tt class="py-name">item_tag_matrix</tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L189"></a><tt class="py-lineno">189</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">item</tt> <tt class="py-keyword">in</tt> <tt class="py-name">tagged_items</tt><tt class="py-op">:</tt> </tt>
<a name="L190"></a><tt class="py-lineno">190</tt>  <tt class="py-line">            <tt class="py-name">item_tag_matrix</tt><tt class="py-op">[</tt><tt class="py-name">item</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt id="link-107" class="py-name"><a title="digichef.tagging.models.Tag" class="py-name" href="#" onclick="return doclink('link-107', 'Tag', 'link-9');">Tag</a></tt><tt class="py-op">.</tt><tt id="link-108" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-108', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-109" class="py-name"><a title="digichef.tagging.models.TagManager.get_for_object" class="py-name" href="#" onclick="return doclink('link-109', 'get_for_object', 'link-99');">get_for_object</a></tt><tt class="py-op">(</tt><tt class="py-name">item</tt><tt class="py-op">)</tt> </tt>
<a name="L191"></a><tt class="py-lineno">191</tt>  <tt class="py-line">         </tt>
<a name="L192"></a><tt class="py-lineno">192</tt>  <tt class="py-line">        <tt class="py-name">recs</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L193"></a><tt class="py-lineno">193</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">item</tt><tt class="py-op">,</tt><tt class="py-name">item_tags</tt> <tt class="py-keyword">in</tt> <tt class="py-name">item_tag_matrix</tt><tt class="py-op">.</tt><tt class="py-name">items</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L194"></a><tt class="py-lineno">194</tt>  <tt class="py-line">            <tt class="py-name">sim</tt> <tt class="py-op">=</tt> <tt id="link-110" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-110', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-111" class="py-name"><a title="digichef.recommender.utils.tanamoto2" class="py-name" href="#" onclick="return doclink('link-111', 'tanamoto2', 'link-105');">tanamoto2</a></tt><tt class="py-op">(</tt><tt class="py-op">[</tt><tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">tg</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">tg</tt> <tt class="py-keyword">in</tt> <tt class="py-name">item_tags</tt><tt class="py-op">]</tt><tt class="py-op">,</tt> <tt class="py-op">[</tt><tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">tg</tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">tg</tt> <tt class="py-keyword">in</tt> <tt class="py-name">search_tags</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L195"></a><tt class="py-lineno">195</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">sim</tt><tt class="py-op">&gt;</tt><tt class="py-name">min_value</tt><tt class="py-op">:</tt> </tt>
<a name="L196"></a><tt class="py-lineno">196</tt>  <tt class="py-line">                <tt class="py-name">recs</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-op">(</tt><tt class="py-name">sim</tt><tt class="py-op">,</tt> <tt class="py-name">item</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L197"></a><tt class="py-lineno">197</tt>  <tt class="py-line">                 </tt>
<a name="L198"></a><tt class="py-lineno">198</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">recs</tt> </tt>
</div><a name="L199"></a><tt class="py-lineno">199</tt>  <tt class="py-line">     </tt>
<a name="L200"></a><tt class="py-lineno">200</tt>  <tt class="py-line">        </tt>
<a name="L201"></a><tt class="py-lineno">201</tt>  <tt class="py-line"><tt class="py-comment"># Clustering methods</tt> </tt>
<a name="RecommenderManager.cluster_users"></a><div id="RecommenderManager.cluster_users-def"><a name="L202"></a><tt class="py-lineno">202</tt> <a class="py-toggle" href="#" id="RecommenderManager.cluster_users-toggle" onclick="return toggle('RecommenderManager.cluster_users');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#cluster_users">cluster_users</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">users</tt><tt class="py-op">,</tt> <tt class="py-param">items</tt><tt class="py-op">,</tt> <tt class="py-param">cluster_count</tt><tt class="py-op">=</tt><tt class="py-number">2</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.cluster_users-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.cluster_users-expanded"><a name="L203"></a><tt class="py-lineno">203</tt>  <tt class="py-line">        <tt class="py-name">user_item_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-112" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.create_matrix" class="py-name" href="#" onclick="return doclink('link-112', 'create_matrix', 'link-19');">create_matrix</a></tt><tt class="py-op">(</tt><tt id="link-113" class="py-name"><a title="digichef.addpeople.users" class="py-name" href="#" onclick="return doclink('link-113', 'users', 'link-59');">users</a></tt><tt class="py-op">,</tt> <tt class="py-name">items</tt><tt class="py-op">)</tt> </tt>
<a name="L204"></a><tt class="py-lineno">204</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt id="link-114" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-114', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-115" class="py-name" targets="Function digichef.recommender.utils.kcluster()=digichef.recommender.utils-module.html#kcluster"><a title="digichef.recommender.utils.kcluster" class="py-name" href="#" onclick="return doclink('link-115', 'kcluster', 'link-115');">kcluster</a></tt><tt class="py-op">(</tt><tt class="py-name">user_item_matrix</tt><tt class="py-op">,</tt> <tt class="py-name">items</tt><tt class="py-op">,</tt> <tt class="py-name">cluster_count</tt><tt class="py-op">)</tt> </tt>
</div><a name="L205"></a><tt class="py-lineno">205</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.cluster_items"></a><div id="RecommenderManager.cluster_items-def"><a name="L206"></a><tt class="py-lineno">206</tt> <a class="py-toggle" href="#" id="RecommenderManager.cluster_items-toggle" onclick="return toggle('RecommenderManager.cluster_items');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#cluster_items">cluster_items</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">users</tt><tt class="py-op">,</tt> <tt class="py-param">items</tt><tt class="py-op">,</tt> <tt class="py-param">cluster_count</tt><tt class="py-op">=</tt><tt class="py-number">2</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.cluster_items-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.cluster_items-expanded"><a name="L207"></a><tt class="py-lineno">207</tt>  <tt class="py-line">        <tt class="py-name">user_item_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-116" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.create_matrix" class="py-name" href="#" onclick="return doclink('link-116', 'create_matrix', 'link-19');">create_matrix</a></tt><tt class="py-op">(</tt><tt id="link-117" class="py-name"><a title="digichef.addpeople.users" class="py-name" href="#" onclick="return doclink('link-117', 'users', 'link-59');">users</a></tt><tt class="py-op">,</tt> <tt class="py-name">items</tt><tt class="py-op">)</tt> </tt>
<a name="L208"></a><tt class="py-lineno">208</tt>  <tt class="py-line">        <tt class="py-name">item_user_matrix</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-118" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.rotate_matrix" class="py-name" href="#" onclick="return doclink('link-118', 'rotate_matrix', 'link-56');">rotate_matrix</a></tt><tt class="py-op">(</tt><tt class="py-name">user_item_matrix</tt><tt class="py-op">)</tt> </tt>
<a name="L209"></a><tt class="py-lineno">209</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt id="link-119" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-119', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-120" class="py-name"><a title="digichef.recommender.utils.kcluster" class="py-name" href="#" onclick="return doclink('link-120', 'kcluster', 'link-115');">kcluster</a></tt><tt class="py-op">(</tt><tt class="py-name">item_user_matrix</tt><tt class="py-op">,</tt> <tt id="link-121" class="py-name"><a title="digichef.addpeople.users" class="py-name" href="#" onclick="return doclink('link-121', 'users', 'link-59');">users</a></tt><tt class="py-op">,</tt> <tt class="py-name">cluster_count</tt><tt class="py-op">)</tt> </tt>
</div><a name="L210"></a><tt class="py-lineno">210</tt>  <tt class="py-line"> </tt>
<a name="L211"></a><tt class="py-lineno">211</tt>  <tt class="py-line"> </tt>
<a name="L212"></a><tt class="py-lineno">212</tt>  <tt class="py-line"><tt class="py-comment"># Home-made methods</tt> </tt>
<a name="RecommenderManager.get_votearray_for_user"></a><div id="RecommenderManager.get_votearray_for_user-def"><a name="L213"></a><tt class="py-lineno">213</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_votearray_for_user-toggle" onclick="return toggle('RecommenderManager.get_votearray_for_user');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_votearray_for_user">get_votearray_for_user</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_votearray_for_user-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_votearray_for_user-expanded"><a name="L214"></a><tt class="py-lineno">214</tt>  <tt class="py-line">        <tt class="py-docstring">"""Return a list of all of the values (1,0,-1) on all votes objects of objectType"""</tt> </tt>
<a name="L215"></a><tt class="py-lineno">215</tt>  <tt class="py-line">        <tt id="link-122" class="py-name" targets="Variable digichef.util.models.UserMeta.votearray=digichef.util.models.UserMeta-class.html#votearray"><a title="digichef.util.models.UserMeta.votearray" class="py-name" href="#" onclick="return doclink('link-122', 'votearray', 'link-122');">votearray</a></tt> <tt class="py-op">=</tt> <tt id="link-123" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-123', 'user', 'link-22');">user</a></tt><tt class="py-op">.</tt><tt class="py-name">usermeta</tt><tt class="py-op">.</tt><tt class="py-name">all</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">.</tt><tt id="link-124" class="py-name"><a title="digichef.util.models.UserMeta.votearray" class="py-name" href="#" onclick="return doclink('link-124', 'votearray', 'link-122');">votearray</a></tt> </tt>
<a name="L216"></a><tt class="py-lineno">216</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt id="link-125" class="py-name"><a title="digichef.util.models.UserMeta.votearray" class="py-name" href="#" onclick="return doclink('link-125', 'votearray', 'link-122');">votearray</a></tt> </tt>
</div><a name="L217"></a><tt class="py-lineno">217</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.userSim"></a><div id="RecommenderManager.userSim-def"><a name="L218"></a><tt class="py-lineno">218</tt> <a class="py-toggle" href="#" id="RecommenderManager.userSim-toggle" onclick="return toggle('RecommenderManager.userSim');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#userSim">userSim</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user1</tt><tt class="py-op">,</tt> <tt class="py-param">user2</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.userSim-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.userSim-expanded"><a name="L219"></a><tt class="py-lineno">219</tt>  <tt class="py-line">        <tt class="py-docstring">"""Get the simmilarity in votes between 2 users (between 0 and 1)"""</tt> </tt>
<a name="L220"></a><tt class="py-lineno">220</tt>  <tt class="py-line">        <tt class="py-name">va1</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-126" class="py-name" targets="Method digichef.recommender.managers.RecommenderManager.get_votearray_for_user()=digichef.recommender.managers.RecommenderManager-class.html#get_votearray_for_user"><a title="digichef.recommender.managers.RecommenderManager.get_votearray_for_user" class="py-name" href="#" onclick="return doclink('link-126', 'get_votearray_for_user', 'link-126');">get_votearray_for_user</a></tt><tt class="py-op">(</tt><tt class="py-name">user1</tt><tt class="py-op">)</tt> </tt>
<a name="L221"></a><tt class="py-lineno">221</tt>  <tt class="py-line">        <tt class="py-name">va2</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-127" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.get_votearray_for_user" class="py-name" href="#" onclick="return doclink('link-127', 'get_votearray_for_user', 'link-126');">get_votearray_for_user</a></tt><tt class="py-op">(</tt><tt class="py-name">user2</tt><tt class="py-op">)</tt> </tt>
<a name="L222"></a><tt class="py-lineno">222</tt>  <tt class="py-line">        <tt class="py-name">sim</tt> <tt class="py-op">=</tt> <tt id="link-128" class="py-name"><a title="digichef.profiles.utils
digichef.recommender.utils
digichef.tagging.utils" class="py-name" href="#" onclick="return doclink('link-128', 'utils', 'link-3');">utils</a></tt><tt class="py-op">.</tt><tt id="link-129" class="py-name" targets="Function digichef.recommender.utils.pearson_correlation()=digichef.recommender.utils-module.html#pearson_correlation"><a title="digichef.recommender.utils.pearson_correlation" class="py-name" href="#" onclick="return doclink('link-129', 'pearson_correlation', 'link-129');">pearson_correlation</a></tt><tt class="py-op">(</tt><tt class="py-name">va1</tt><tt class="py-op">,</tt><tt class="py-name">va2</tt><tt class="py-op">)</tt> </tt>
<a name="L223"></a><tt class="py-lineno">223</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">sim</tt> </tt>
</div><a name="L224"></a><tt class="py-lineno">224</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.get_mean_vote_for_user"></a><div id="RecommenderManager.get_mean_vote_for_user-def"><a name="L225"></a><tt class="py-lineno">225</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_mean_vote_for_user-toggle" onclick="return toggle('RecommenderManager.get_mean_vote_for_user');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_mean_vote_for_user">get_mean_vote_for_user</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_mean_vote_for_user-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_mean_vote_for_user-expanded"><a name="L226"></a><tt class="py-lineno">226</tt>  <tt class="py-line">        <tt class="py-name">mean</tt> <tt class="py-op">=</tt> <tt id="link-130" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-130', 'user', 'link-22');">user</a></tt><tt class="py-op">.</tt><tt class="py-name">usermeta</tt><tt class="py-op">.</tt><tt class="py-name">all</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">.</tt><tt id="link-131" class="py-name" targets="Variable digichef.util.models.UserMeta.meanvote=digichef.util.models.UserMeta-class.html#meanvote"><a title="digichef.util.models.UserMeta.meanvote" class="py-name" href="#" onclick="return doclink('link-131', 'meanvote', 'link-131');">meanvote</a></tt> </tt>
<a name="L227"></a><tt class="py-lineno">227</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">mean</tt> </tt>
</div><a name="L228"></a><tt class="py-lineno">228</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.get_pred_vote_for_user_on_item"></a><div id="RecommenderManager.get_pred_vote_for_user_on_item-def"><a name="L229"></a><tt class="py-lineno">229</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_pred_vote_for_user_on_item-toggle" onclick="return toggle('RecommenderManager.get_pred_vote_for_user_on_item');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_pred_vote_for_user_on_item">get_pred_vote_for_user_on_item</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user</tt><tt class="py-op">,</tt> <tt class="py-param">item</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_pred_vote_for_user_on_item-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_pred_vote_for_user_on_item-expanded"><a name="L230"></a><tt class="py-lineno">230</tt>  <tt class="py-line">        <tt class="py-docstring">"""Does the following equation</tt> </tt>
<a name="L231"></a><tt class="py-lineno">231</tt>  <tt class="py-line"><tt class="py-docstring">        </tt> </tt>
<a name="L232"></a><tt class="py-lineno">232</tt>  <tt class="py-line"><tt class="py-docstring">        $\\bar{r}_u + \\frac{\sum_{n \subset neighbours(u)}{usersim(u,n)\mul(r_{ni}-\\bar{r}_n)}}{\sum_{n \subset neighbours(u)}{usersim(u,n)}}$</tt> </tt>
<a name="L233"></a><tt class="py-lineno">233</tt>  <tt class="py-line"><tt class="py-docstring">        </tt> </tt>
<a name="L234"></a><tt class="py-lineno">234</tt>  <tt class="py-line"><tt class="py-docstring">        to get the predicted vote of a user on an item</tt> </tt>
<a name="L235"></a><tt class="py-lineno">235</tt>  <tt class="py-line"><tt class="py-docstring">        """</tt> </tt>
<a name="L236"></a><tt class="py-lineno">236</tt>  <tt class="py-line">        <tt class="py-name">objectType</tt> <tt class="py-op">=</tt> <tt class="py-name">type</tt><tt class="py-op">(</tt><tt class="py-name">item</tt><tt class="py-op">)</tt> </tt>
<a name="L237"></a><tt class="py-lineno">237</tt>  <tt class="py-line">        <tt class="py-name">mean_user_vote</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-132" class="py-name" targets="Method digichef.recommender.managers.RecommenderManager.get_mean_vote_for_user()=digichef.recommender.managers.RecommenderManager-class.html#get_mean_vote_for_user"><a title="digichef.recommender.managers.RecommenderManager.get_mean_vote_for_user" class="py-name" href="#" onclick="return doclink('link-132', 'get_mean_vote_for_user', 'link-132');">get_mean_vote_for_user</a></tt><tt class="py-op">(</tt><tt id="link-133" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-133', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt> <tt class="py-comment">#rbar_u</tt> </tt>
<a name="L238"></a><tt class="py-lineno">238</tt>  <tt class="py-line">        <tt class="py-name">neighbours</tt> <tt class="py-op">=</tt> <tt class="py-name">User</tt><tt class="py-op">.</tt><tt id="link-134" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-134', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-135" class="py-name" targets="Variable digichef.profiles.forms.ProfileForm.Meta.exclude=digichef.profiles.forms.ProfileForm.Meta-class.html#exclude"><a title="digichef.profiles.forms.ProfileForm.Meta.exclude" class="py-name" href="#" onclick="return doclink('link-135', 'exclude', 'link-135');">exclude</a></tt><tt class="py-op">(</tt><tt class="py-name">id</tt><tt class="py-op">=</tt><tt id="link-136" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-136', 'user', 'link-22');">user</a></tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">)</tt> </tt>
<a name="L239"></a><tt class="py-lineno">239</tt>  <tt class="py-line"> </tt>
<a name="L240"></a><tt class="py-lineno">240</tt>  <tt class="py-line">        <tt class="py-name">sum_sim</tt> <tt class="py-op">=</tt> <tt class="py-name">sum</tt><tt class="py-op">(</tt><tt class="py-op">[</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-137" class="py-name" targets="Method digichef.recommender.managers.RecommenderManager.userSim()=digichef.recommender.managers.RecommenderManager-class.html#userSim"><a title="digichef.recommender.managers.RecommenderManager.userSim" class="py-name" href="#" onclick="return doclink('link-137', 'userSim', 'link-137');">userSim</a></tt><tt class="py-op">(</tt><tt class="py-name">neighbour</tt><tt class="py-op">,</tt> <tt id="link-138" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-138', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt> <tt class="py-keyword">for</tt> <tt class="py-name">neighbour</tt> <tt class="py-keyword">in</tt> <tt class="py-name">neighbours</tt><tt class="py-op">]</tt><tt class="py-op">)</tt>      <tt class="py-comment">#bottom frac</tt> </tt>
<a name="L241"></a><tt class="py-lineno">241</tt>  <tt class="py-line">        <tt class="py-name">sum_votes</tt> <tt class="py-op">=</tt> <tt class="py-name">sum</tt><tt class="py-op">(</tt><tt class="py-op">[</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-139" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.userSim" class="py-name" href="#" onclick="return doclink('link-139', 'userSim', 'link-137');">userSim</a></tt><tt class="py-op">(</tt><tt class="py-name">neighbour</tt><tt class="py-op">,</tt> <tt id="link-140" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-140', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt><tt class="py-op">*</tt>                                                        <tt class="py-comment">#top frac</tt> </tt>
<a name="L242"></a><tt class="py-lineno">242</tt>  <tt class="py-line">            <tt class="py-op">(</tt><tt id="link-141" class="py-name"><a title="digichef.voting.models.Vote" class="py-name" href="#" onclick="return doclink('link-141', 'Vote', 'link-6');">Vote</a></tt><tt class="py-op">.</tt><tt id="link-142" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-142', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-143" class="py-name" targets="Method digichef.voting.managers.VoteManager.get_val_for_user()=digichef.voting.managers.VoteManager-class.html#get_val_for_user"><a title="digichef.voting.managers.VoteManager.get_val_for_user" class="py-name" href="#" onclick="return doclink('link-143', 'get_val_for_user', 'link-143');">get_val_for_user</a></tt><tt class="py-op">(</tt><tt class="py-name">item</tt><tt class="py-op">,</tt> <tt id="link-144" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-144', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt><tt class="py-op">-</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-145" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.get_mean_vote_for_user" class="py-name" href="#" onclick="return doclink('link-145', 'get_mean_vote_for_user', 'link-132');">get_mean_vote_for_user</a></tt><tt class="py-op">(</tt><tt class="py-name">neighbour</tt><tt class="py-op">)</tt> <tt class="py-op">)</tt> <tt class="py-op">)</tt> </tt>
<a name="L243"></a><tt class="py-lineno">243</tt>  <tt class="py-line">            <tt class="py-keyword">for</tt> <tt class="py-name">neighbour</tt> <tt class="py-keyword">in</tt> <tt class="py-name">neighbours</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L244"></a><tt class="py-lineno">244</tt>  <tt class="py-line">        <tt class="py-name">value</tt> <tt class="py-op">=</tt> <tt class="py-name">mean_user_vote</tt><tt class="py-op">+</tt><tt class="py-op">(</tt><tt class="py-name">sum_votes</tt><tt class="py-op">/</tt><tt class="py-name">sum_sim</tt><tt class="py-op">)</tt> </tt>
<a name="L245"></a><tt class="py-lineno">245</tt>  <tt class="py-line"> </tt>
<a name="L246"></a><tt class="py-lineno">246</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">value</tt> </tt>
</div><a name="L247"></a><tt class="py-lineno">247</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.get_pred_votes_for_user_on_items"></a><div id="RecommenderManager.get_pred_votes_for_user_on_items-def"><a name="L248"></a><tt class="py-lineno">248</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_pred_votes_for_user_on_items-toggle" onclick="return toggle('RecommenderManager.get_pred_votes_for_user_on_items');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_pred_votes_for_user_on_items">get_pred_votes_for_user_on_items</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user</tt><tt class="py-op">,</tt> <tt class="py-param">items</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_pred_votes_for_user_on_items-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_pred_votes_for_user_on_items-expanded"><a name="L249"></a><tt class="py-lineno">249</tt>  <tt class="py-line"><tt class="py-comment">#        poke("total","none")</tt> </tt>
<a name="L250"></a><tt class="py-lineno">250</tt>  <tt class="py-line">        <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L251"></a><tt class="py-lineno">251</tt>  <tt class="py-line">            <tt class="py-name">iter</tt><tt class="py-op">(</tt><tt class="py-name">items</tt><tt class="py-op">)</tt> <tt class="py-comment">#try and treat the object as a sequence</tt> </tt>
<a name="L252"></a><tt class="py-lineno">252</tt>  <tt class="py-line">        <tt class="py-keyword">except</tt><tt class="py-op">:</tt> </tt>
<a name="L253"></a><tt class="py-lineno">253</tt>  <tt class="py-line">            <tt class="py-name">items</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-name">items</tt><tt class="py-op">]</tt> <tt class="py-comment">#we were passed a single item, stick in in a list</tt> </tt>
<a name="L254"></a><tt class="py-lineno">254</tt>  <tt class="py-line"> </tt>
<a name="L255"></a><tt class="py-lineno">255</tt>  <tt class="py-line">        <tt class="py-name">objectType</tt> <tt class="py-op">=</tt> <tt class="py-name">type</tt><tt class="py-op">(</tt><tt class="py-name">items</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L256"></a><tt class="py-lineno">256</tt>  <tt class="py-line">        <tt class="py-name">mean_user_vote</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-146" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.get_mean_vote_for_user" class="py-name" href="#" onclick="return doclink('link-146', 'get_mean_vote_for_user', 'link-132');">get_mean_vote_for_user</a></tt><tt class="py-op">(</tt><tt id="link-147" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-147', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt> <tt class="py-comment">#rbar_u</tt> </tt>
<a name="L257"></a><tt class="py-lineno">257</tt>  <tt class="py-line">        <tt class="py-name">neighbours</tt> <tt class="py-op">=</tt> <tt class="py-name">User</tt><tt class="py-op">.</tt><tt id="link-148" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-148', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-149" class="py-name"><a title="digichef.profiles.forms.ProfileForm.Meta.exclude" class="py-name" href="#" onclick="return doclink('link-149', 'exclude', 'link-135');">exclude</a></tt><tt class="py-op">(</tt><tt class="py-name">id</tt><tt class="py-op">=</tt><tt id="link-150" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-150', 'user', 'link-22');">user</a></tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">)</tt> </tt>
<a name="L258"></a><tt class="py-lineno">258</tt>  <tt class="py-line"> </tt>
<a name="L259"></a><tt class="py-lineno">259</tt>  <tt class="py-line">        <tt class="py-name">sum_sim</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> <tt class="py-comment">#bottom frac</tt> </tt>
<a name="L260"></a><tt class="py-lineno">260</tt>  <tt class="py-line">        <tt class="py-name">sims</tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> <tt class="py-comment">#store similarities in dict to save recomputing them</tt> </tt>
<a name="L261"></a><tt class="py-lineno">261</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">neighbour</tt> <tt class="py-keyword">in</tt> <tt class="py-name">neighbours</tt><tt class="py-op">:</tt> </tt>
<a name="L262"></a><tt class="py-lineno">262</tt>  <tt class="py-line">            <tt class="py-name">sim</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-151" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.userSim" class="py-name" href="#" onclick="return doclink('link-151', 'userSim', 'link-137');">userSim</a></tt><tt class="py-op">(</tt><tt class="py-name">neighbour</tt><tt class="py-op">,</tt> <tt id="link-152" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-152', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt> </tt>
<a name="L263"></a><tt class="py-lineno">263</tt>  <tt class="py-line">            <tt class="py-name">sims</tt><tt class="py-op">[</tt><tt class="py-name">neighbour</tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">sim</tt> </tt>
<a name="L264"></a><tt class="py-lineno">264</tt>  <tt class="py-line"> </tt>
<a name="L265"></a><tt class="py-lineno">265</tt>  <tt class="py-line">            <tt class="py-name">sum_sim</tt> <tt class="py-op">+=</tt> <tt class="py-name">sim</tt> <tt class="py-comment">#accumulate the sum of similarities (bottom of frac)</tt> </tt>
<a name="L266"></a><tt class="py-lineno">266</tt>  <tt class="py-line"> </tt>
<a name="L267"></a><tt class="py-lineno">267</tt>  <tt class="py-line">        <tt class="py-name">return_list</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L268"></a><tt class="py-lineno">268</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">item</tt> <tt class="py-keyword">in</tt> <tt class="py-name">items</tt><tt class="py-op">:</tt> </tt>
<a name="L269"></a><tt class="py-lineno">269</tt>  <tt class="py-line"><tt class="py-comment">#            poke("iter", "None")</tt> </tt>
<a name="L270"></a><tt class="py-lineno">270</tt>  <tt class="py-line">            <tt class="py-name">sum_votes</tt> <tt class="py-op">=</tt> <tt class="py-name">sum</tt><tt class="py-op">(</tt><tt class="py-op">[</tt><tt class="py-op">(</tt><tt class="py-name">sims</tt><tt class="py-op">[</tt><tt class="py-name">neighbour</tt><tt class="py-op">.</tt><tt class="py-name">id</tt><tt class="py-op">]</tt><tt class="py-op">*</tt>                                                       <tt class="py-comment">#top frac</tt> </tt>
<a name="L271"></a><tt class="py-lineno">271</tt>  <tt class="py-line">                <tt class="py-op">(</tt><tt id="link-153" class="py-name"><a title="digichef.voting.models.Vote" class="py-name" href="#" onclick="return doclink('link-153', 'Vote', 'link-6');">Vote</a></tt><tt class="py-op">.</tt><tt id="link-154" class="py-name"><a title="digichef.recommender.models.Recommender.objects
digichef.registration.models.RegistrationProfile.objects
digichef.tagging.models.Tag.objects
digichef.tagging.models.TaggedItem.objects
digichef.voting.models.Vote.objects" class="py-name" href="#" onclick="return doclink('link-154', 'objects', 'link-23');">objects</a></tt><tt class="py-op">.</tt><tt id="link-155" class="py-name"><a title="digichef.voting.managers.VoteManager.get_val_for_user" class="py-name" href="#" onclick="return doclink('link-155', 'get_val_for_user', 'link-143');">get_val_for_user</a></tt><tt class="py-op">(</tt><tt class="py-name">item</tt><tt class="py-op">,</tt> <tt id="link-156" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-156', 'user', 'link-22');">user</a></tt><tt class="py-op">)</tt><tt class="py-op">-</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-157" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.get_mean_vote_for_user" class="py-name" href="#" onclick="return doclink('link-157', 'get_mean_vote_for_user', 'link-132');">get_mean_vote_for_user</a></tt><tt class="py-op">(</tt><tt class="py-name">neighbour</tt><tt class="py-op">)</tt> <tt class="py-op">)</tt> <tt class="py-op">)</tt> </tt>
<a name="L272"></a><tt class="py-lineno">272</tt>  <tt class="py-line">                <tt class="py-keyword">for</tt> <tt class="py-name">neighbour</tt> <tt class="py-keyword">in</tt> <tt class="py-name">neighbours</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L273"></a><tt class="py-lineno">273</tt>  <tt class="py-line">            <tt class="py-name">value</tt> <tt class="py-op">=</tt> <tt class="py-name">mean_user_vote</tt><tt class="py-op">+</tt><tt class="py-op">(</tt><tt class="py-name">sum_votes</tt><tt class="py-op">/</tt><tt class="py-name">float</tt><tt class="py-op">(</tt><tt class="py-name">sum_sim</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L274"></a><tt class="py-lineno">274</tt>  <tt class="py-line">            <tt class="py-name">return_list</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-op">(</tt><tt class="py-name">value</tt><tt class="py-op">,</tt><tt class="py-name">item</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L275"></a><tt class="py-lineno">275</tt>  <tt class="py-line"><tt class="py-comment">#            poke("iter", "post")</tt> </tt>
<a name="L276"></a><tt class="py-lineno">276</tt>  <tt class="py-line"> </tt>
<a name="L277"></a><tt class="py-lineno">277</tt>  <tt class="py-line"><tt class="py-comment">#        poke("total","done")</tt> </tt>
<a name="L278"></a><tt class="py-lineno">278</tt>  <tt class="py-line"><tt class="py-comment">#        output()</tt> </tt>
<a name="L279"></a><tt class="py-lineno">279</tt>  <tt class="py-line">        <tt class="py-keyword">return</tt> <tt class="py-name">sorted</tt><tt class="py-op">(</tt><tt class="py-name">return_list</tt><tt class="py-op">,</tt> <tt class="py-name">reverse</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
</div><a name="L280"></a><tt class="py-lineno">280</tt>  <tt class="py-line"> </tt>
<a name="RecommenderManager.get_recommendations_for_user_on_items"></a><div id="RecommenderManager.get_recommendations_for_user_on_items-def"><a name="L281"></a><tt class="py-lineno">281</tt> <a class="py-toggle" href="#" id="RecommenderManager.get_recommendations_for_user_on_items-toggle" onclick="return toggle('RecommenderManager.get_recommendations_for_user_on_items');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="digichef.recommender.managers.RecommenderManager-class.html#get_recommendations_for_user_on_items">get_recommendations_for_user_on_items</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">user</tt><tt class="py-op">,</tt> <tt class="py-param">items</tt><tt class="py-op">,</tt> <tt class="py-param">number</tt><tt class="py-op">=</tt><tt class="py-name">False</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="RecommenderManager.get_recommendations_for_user_on_items-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RecommenderManager.get_recommendations_for_user_on_items-expanded"><a name="L282"></a><tt class="py-lineno">282</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">number</tt><tt class="py-op">:</tt> </tt>
<a name="L283"></a><tt class="py-lineno">283</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">sorted</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-158" class="py-name" targets="Method digichef.recommender.managers.RecommenderManager.get_pred_votes_for_user_on_items()=digichef.recommender.managers.RecommenderManager-class.html#get_pred_votes_for_user_on_items"><a title="digichef.recommender.managers.RecommenderManager.get_pred_votes_for_user_on_items" class="py-name" href="#" onclick="return doclink('link-158', 'get_pred_votes_for_user_on_items', 'link-158');">get_pred_votes_for_user_on_items</a></tt><tt class="py-op">(</tt><tt id="link-159" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-159', 'user', 'link-22');">user</a></tt><tt class="py-op">,</tt> <tt class="py-name">items</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">reverse</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt><tt class="py-op">[</tt><tt class="py-op">:</tt><tt class="py-name">number</tt><tt class="py-op">]</tt> </tt>
<a name="L284"></a><tt class="py-lineno">284</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L285"></a><tt class="py-lineno">285</tt>  <tt class="py-line">            <tt class="py-keyword">return</tt> <tt class="py-name">sorted</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-160" class="py-name"><a title="digichef.recommender.managers.RecommenderManager.get_pred_votes_for_user_on_items" class="py-name" href="#" onclick="return doclink('link-160', 'get_pred_votes_for_user_on_items', 'link-158');">get_pred_votes_for_user_on_items</a></tt><tt class="py-op">(</tt><tt id="link-161" class="py-name"><a title="digichef.profiles.models.Profile.user
digichef.registration.models.RegistrationProfile.user
digichef.util.models.UserMeta.user
digichef.voting.models.Vote.user" class="py-name" href="#" onclick="return doclink('link-161', 'user', 'link-22');">user</a></tt><tt class="py-op">,</tt> <tt class="py-name">items</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-name">reverse</tt><tt class="py-op">=</tt><tt class="py-name">True</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L286"></a><tt class="py-lineno">286</tt>  <tt class="py-line"> </tt><script type="text/javascript">
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